import { login, logout, getInfo } from '@/api/user'
import {
  getToken, setToken, removeToken,
  getUserName, setUserName, removeUserName
} from '@/utils/auth'
import router, { resetRouter } from '@/router'

const state = {
  token: getToken(),
  name: getUserName(),
  avatar: 'https://wpimg.wallstcn.com/f778738c-e4f8-4870-b634-56703b4acafe.gif',
  introduction: '',
  roles: [],
  elements: [],
  menus: []
}

const mutations = {
  SET_TOKEN: (state, token) => {
    state.token = token
  },
  SET_INTRODUCTION: (state, introduction) => {
    state.introduction = introduction
  },
  SET_NAME: (state, name) => {
    state.name = name
  },
  SET_AVATAR: (state, avatar) => {
    state.avatar = avatar
  },
  SET_ROLES: (state, roles) => {
    state.roles = roles
  },
  SET_ELEMENTS: (state, elements) => {
    state.elements = elements
  },
  SET_MENUS: (state, menus) => {
    state.menus = menus
  }
}

const actions = {
  // user login
  login({ commit }, userInfo) {
    const { username, password } = userInfo
    return new Promise((resolve, reject) => {
      login({ username: username, password: password, type: 'Pc' }).then(response => {
        const { datas } = response
        commit('SET_TOKEN', datas.token)
        commit('SET_NAME', username)
        setToken(datas.token)
        setUserName(username)
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // get user info
  getInfo({ commit, state }) {
    return new Promise((resolve, reject) => {
      getInfo().then(response => {
        const { datas } = response

        if (!datas) {
          reject('Verification failed, please Login again.')
        }
        console.log(datas)

        const { elements, menus, user } = datas;
        if (!user) {
          reject('getInfo: user is emtry!')
        }
        // roles must be a non-empty array
        if (!menus || menus.length <= 0) {
          reject('该角色未分配页面权限，请联系管理员');
          //reject('getInfo: roles must be a non-null array!')
        }

        commit('SET_MENUS', menus)
        //commit('SET_NAME', user.nickName)
        commit('SET_INTRODUCTION', user)
        var elementLists = {};
        elements.forEach(element => {
          elementLists[element.code] = element;
        });
        commit('SET_ELEMENTS', elementLists)
        resolve(datas)
      }).catch(error => {
        reject(error)
      })
    })
  },

  // user logout
  logout({ commit, state, dispatch }) {
    return new Promise((resolve, reject) => {
      // logout(state.token).then(() => {
      commit('SET_TOKEN', '')
      commit('SET_NAME', '')
      commit('SET_MENUS', [])
      commit('SET_ROLES', [])
      removeToken()
      removeUserName()
      resetRouter()

      // reset visited views and cached views
      // to fixed https://github.com/PanJiaChen/vue-element-admin/issues/2485
      dispatch('tagsView/delAllViews', null, { root: true })

      resolve()
      // }).catch(error => {
      //   reject(error)
      // })
    })
  },

  // remove token
  resetToken({ commit }) {
    return new Promise(resolve => {
      commit('SET_TOKEN', '')
      commit('SET_ROLES', [])
      removeToken()
      resolve()
    })
  },

  // dynamically modify permissions
  async changeRoles({ commit, dispatch }, role) {
    const token = role + '-token'

    commit('SET_TOKEN', token)
    // setToken(token)

    const { roles } = await dispatch('getInfo')

    resetRouter()

    // generate accessible routes map based on roles
    const accessRoutes = await dispatch('permission/generateRoutes', roles, { root: true })
    // dynamically add accessible routes
    router.addRoutes(accessRoutes)

    // reset visited views and cached views
    dispatch('tagsView/delAllViews', null, { root: true })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}
